require 'spec_helper'
require 'webrick'

describe 'Fetching data from HTTP remotes' do
  before(:all) do
    log_file ||= StringIO.new
    log = WEBrick::Log.new(log_file)
    options = {
      Port: 9399,
      Logger: log,
      AccessLog: [
        [log, WEBrick::AccessLog::COMMON_LOG_FORMAT],
        [log, WEBrick::AccessLog::REFERER_LOG_FORMAT]
      ]
    }
    @server = WEBrick::HTTPServer.new(options)
    @server.mount '/', WEBrick::HTTPServlet::FileHandler, fixtures_dir
    trap('INT') { @server.stop }
    @server_thread = Thread.new { @server.start }
  end

  it '#parse_http is called without any option' do
    result = FormatParser.parse_http('http://localhost:9399/PNG/anim.png')

    expect(result.format).to eq(:png)
    expect(result.height_px).to eq(180)
  end

  it '#parse_http is called with hash options' do
    fake_result = double(nature: :audio, format: :aiff)
    expect_any_instance_of(FormatParser::AIFFParser).to receive(:call).and_return(fake_result)
    results = FormatParser.parse_http('http://localhost:9399/PNG/anim.png', results: :all)

    expect(results.count).to eq(2)
    expect(results).to include(fake_result)
  end

  it 'parses the animated PNG over HTTP' do
    file_information = FormatParser.parse_http('http://localhost:9399/PNG/anim.png')
    expect(file_information).not_to be_nil
    expect(file_information.nature).to eq(:image)
  end

  it 'parses the JPEGs exif data' do
    file_information = FormatParser.parse_http('http://localhost:9399/exif-orientation-testimages/jpg/top_left.jpg')
    expect(file_information).not_to be_nil
    expect(file_information.nature).to eq(:image)
    expect(file_information.format).to eq(:jpg)
    expect(file_information.orientation).to eq(:top_left)
  end

  it 'parses the TIFFs exif data' do
    file_information = FormatParser.parse_http('http://localhost:9399/TIFF/test.tif')
    expect(file_information).not_to be_nil
    expect(file_information.nature).to eq(:image)
    expect(file_information.format).to eq(:tif)
    expect(file_information.orientation).to eq(:top_left)
  end

  describe 'is able to correctly parse orientation for all remote JPEG EXIF examples from FastImage' do
    Dir.glob(fixtures_dir + '/exif-orientation-testimages/jpg/*.jpg').each do |jpeg_path|
      filename = File.basename(jpeg_path)
      it "is able to parse #{filename}" do
        remote_jpeg_path = jpeg_path.gsub(fixtures_dir, 'http://localhost:9399')
        file_information = FormatParser.parse_http(remote_jpeg_path)
        expect(file_information).not_to be_nil

        expect(file_information.orientation).to be_kind_of(Symbol)
        # Filenames in this dir correspond with the orientation of the file
        expect(filename.include?(file_information.orientation.to_s)).to be true
      end
    end
  end

  describe 'when parsing remote fixtures' do
    Dir.glob(fixtures_dir + '/**/*.*').sort.each do |fixture_path|
      filename = File.basename(fixture_path)
      it "parses #{filename} without raising any errors" do
        remote_fixture_path = fixture_path.gsub(fixtures_dir, 'http://localhost:9399')
        # Some of the fixtures are in dirs with spaces
        cleaned_remote_fixture_path = remote_fixture_path.gsub(' ', '%20')
        FormatParser.parse_http(cleaned_remote_fixture_path)
      end
    end
  end

  after(:all) do
    @server.stop
    @server_thread.join(0.5)
  end
end